Over protective Boyfried

Me and my boyfriend have been dating for 17 months now, he's very insecure thinking that with all the new experiences life has to offer going into adulthood he thinks I will leave him for any guy that comes by. I really love him and I've tried to assure him that nothing like that will happen.

Basically he's dressed coded me, he doesn't let me wear crop tops, short shorts, tank tops that are too evealing, or V necks, or even leggings. I have nice sized breasts and a nice sized booty, but I feel its ridiculous that he doesn't want me wearing these things because he doesn't want guys to see me like that and want me/flirt with me. He said if he sees me wearing those things without him around that he'll break up with me.

What can I do ?